Hi, I wonder if anyone could help. We're having a problem with HDR with
two identical machines running Windows 2003 and IDS 10.00.TC3. We cannot
get these machines to replicate. I have an open case with OpenPSL for
some weeks who have escalated it to IBM and I am hoping I will get a
solution by that route, but the customer and us are now desperate for a
solution.

Here is the log from the primary server showing a level 0 archive being
taken, this is restored on the secondary and replication initiated.

16:09:24  Level 0 Archive started on rootdbs, maindbs, physdbs, logsdbs,
rawdbs, mediadbs, sbspace
16:11:09  Archive on rootdbs, maindbs, physdbs, logsdbs, rawdbs,
mediadbs, sbspace Completed.
16:19:45  Checkpoint Completed:  duration was 2 seconds.
16:19:45  Checkpoint loguniq 1117, logpos 0xa5e018, timestamp: 0x6f30165c

16:19:45  Maximum server connections 21
16:29:45  Checkpoint Completed:  duration was 0 seconds.
16:29:45  Checkpoint loguniq 1117, logpos 0xb35018, timestamp: 0x6f306186

16:29:45  Maximum server connections 21
16:39:45  Checkpoint Completed:  duration was 0 seconds.
16:39:45  Checkpoint loguniq 1117, logpos 0xc0a018, timestamp: 0x6f30ac85

16:39:45  Maximum server connections 21
16:49:45  Checkpoint Completed:  duration was 0 seconds.
16:49:45  Checkpoint loguniq 1117, logpos 0xcdd018, timestamp: 0x6f30f6e0

16:49:45  Maximum server connections 21
16:58:30  (53) Unable to initiate asynchronous read operation
16:58:30  DR: Cannot connect to secondary server
16:58:30  DR: Turned off on primary server

The secondary's log isn't that interesting. We just get:

16:58:26  DR: Reservation of the last logical log for log backup turned off
16:58:26  DR: new type = secondary, primary server name = ol_server1
16:58:27  DR: Trying to connect to primary server = ol_server1

I think the important part is the "(53) Unable to initiate asynchronous
read operation". We ought to be "experts" at setting up HDR by now as
we've been doing it for years on several platforms for a lot of
customers and have never seen this message. The sequence of events is as
follows:

On primary: run "onmode -d standard", perform level 0 backup with
"ontape -s -L 0".
On secondary: restore tape using "ontape -p", don't restore level 1
archive. Issue command: "onmode -d secondary ol_server1"
On primary: issue command "onmode -d primary ol_server2". It is shortly
after this that the asychronous read operation fails.

Any ideas? I can supply onconfig, "onstat -a", "onstat -g all" and
environment details from registry and ol_server1.cmd file - all of these
are with IBM. At the moment I have nothing to go on and my only option
is to upgrade to 10.00.TC4 which is disruptive for the customer.

Many thanks in advance, Ben.